Nut-tapping machine



C. E. ROSS NUT TAPPI NG MACHINE Filed May '29, 1922 4 Sheets-Sheet 1 o/6 4 O 9 O 02/ O I O 49 .46 -E6 O J79 I Y O nl l. I

I ll] 67 9 l3 0 6 e e 70 '65 .53 r

as 5; 78,75 737772. 2 /.9 2a

I l f? INVENTDR 3 c. E; ROSS NUT TAYPPING MACHINE Filed May 29, 1922' 4Sheets-Sheet 2 E I v 119 7 78 725 76 2: 2s 50 5a" 14 77 o 24:27 I gnaw fgvwmlom Q 5 Q clmdagfiwda June 21 1927. 1,632,855

C. E. ROSS NUT TAPPING MACHINE Filed ma 29. 1922 4. Sheets-Sheet 3INYENT 11R June -21 1927. c. E. Ross 63 855 4 NUT TAPPING MACHINE FiledMay 29. 1922 4 Sheets Sheet W IIIIMH'WIA INVENTUR.

Patented June 21, 1927.

C-HIXBIES E: Ross; OFYA'MSTERDAM, NEW YORK, ASSIGNOR To THETCOLLETTE MAEKCTURI'NG'COMPAN'Y- or AMSTERDAM; NEW YORK, -A. CORPORATION OF NEWYORK.

NUT TAPPING MACHINE.

Application fiIedMey'ZS, 1922. semi m5. 564,421.

My invention'has for its object'to provide aneiiicient and rapidfnuttapping machine. The invention provides a means iorffeeding the nutsinto position before-taps and reinox' ing the nuts from this position.It provides means whe'rebythe nuts are" fed to and removed from thetapping position without jamming the nuts or the tap's. It alsoprovides-coinp'ensating parts whereby assured and uniitorni action isobtained inthe' machine, and particularly in the nut tapping mechanism.p

The in'vention'has for its object-to produce other teatt 'res and attainother advantages that will appear troin the following description andupon examination ofthe drawings forming a part of this application.

The invention may be contained in structures ot'di'flerent forums. Toillustrate a practical application of the invention I have selected oneof'the structui es containing the invention and shall describe ithereinafter. The structure selected is illustrated in the V accompanyingdrawings.

Figure 1 of the'drawingsis a'vieW' of'the top ,o't'the machine selectedfor purposes'of illustration. Fig.2 is arrillustrathin of a front View.Fig.3 is anill'us't'rat'ion ofan end view. liigxs is an illhs'tration ofaside view opposite to that 'shown' in' Fig; 2. Fig, 5 is an"illustration f my end View opposite to that shown'in Fig.3. 7 Fig, 6isafsection'al view taken on the line indicated in Fig, 1. Fig. 7'13 asectional"viewltaken on the line indi c'atedin Fig. 11 Fig, Sisasectional View of a gear mechanism 'for'dii'ving thetap 's: Figs 9 is asectional View 'of'a m clutch taken on the plane" of theline 9 -9indicated in Fig.1. Fig 10 is a "perspective view of a controlling cam;Fig; 11 is a view of a-section taken on theplan'e of the liiie 11-11indicated in Fig; 6;

1, in certain ofthe fi'g-ures,' are legs or standards for supporting atable topaor plate 2 of the machine, to xvhich -alarge 'part'of themechanism is bolted. A: treadle' '3' is pivotally supported by thestandards 1 and is connected by means of the linkjrod to the mechanismlocatedbn the p1ate2 Where,- bythe mechanism may be controlled by thetoot of the attendantor operatorof'the machine. I l

The link 4 controls a jaw' clutch 5Q It is .c(nnie( :tedto a hell cranklever Gthat is pivoted on a bracket The 'lever"6*- is"pulled in onedirection by the pedal operating through the'li'n'li may; and in theopposite direction by thfsp'ring "8. The movement caused "by the, pedalop'erates'to' connect the parts 9 and 10 of thejaw clutch, the lever 6being connected'to the part9 at i'tsforked endlocated in a suitablechannelforined in the part9'sli'desfth'e part 9 into engagement with thepart 10 of the jaw clutch. Thepart' 9 is keyed to a sliait11While'thepart 10i s a sleeve'that is "connected -t0 acain 12'. It alsooperates'as a pulley heel; as herein afte'r described. The shaft '11isfcontin'tronsly driven by Ineansfof 'the belts 13 ai1d 1 1 and'theworin gears 15 and"16; the belt 13 being driven by a uitable drivingmechanism' ohtaining'powei" from any suitable source. I I v V v Then thejatif clutch parts areconnected together cain 12is" rotated to place thenuts to 'bc" talaped' and "the taps in operative relation. In thestruct-ure shown in the drawings 'the nuts" are nioved to the" taps isprovided with a channel lt" infwhich is located a roller 18 that isconnected tOFja lever 19; The "lever '19 is pivotally supported by meansof theshaft 21 in bearing'bra'ckets 2Q,thatare-seoured tof the plate 21A rot] 22 is pivotally connected to the lever 19" by in the free'ein'dQitthe-leVerTQ. The slot provides "adj llstability of th e rod 22relative'j to the lever and thtls provides a nie'ans'fwhereby theextenti'ot theinovenients "of th e rod 22 n'ray be Varied as desired. p

The rod- 22 extends through aneai 25'connect'ed 'tq or'formediint egral'with a lever26 to produce oscillatory movements in the lever26Z H Theflevef'26i'is pivotally connected to a pedestal 27 that-is secured'ftothe bed or base plate 2. COmpresSibn"springsflg and 29 re h p 'pb iteside of th ear 1 and het'vveenadjustablerings 3O Whereb the ear 25; andconsequently "thej'lever 26, are yieldinglyhe'1dintheir pfositfio srenews-u) the re The degr e i'vyi mehl maybe aried by'vaiyingthedegieeof conifpr r-Qf' pfi s nd zebye yi e eti th g .30- 01,1 aw d The emen ofthe leve'ir 26' therefore is not piSsi'tive, but the" pressuretransniittd through the springs to thelever 26 is sufficiently great tocause the operation of the machine and yet prevent jamming of parts ofthe mechanism and greatly reduce breakage. i

- The lever26 operates to move the nuts to the taps. Its free end issuitably slotted to permit the change from the angular movements of thelever to longitudinal movements of the nut carrying slide 31 to which itis connected bythe pin 32. The slide 31 is guided in its longitudinalmovements by means of the standard or pedestal 45. The edges of theslide are covered by the plates35 (Fig. so that the slide is securelybut slidably held in position in; the pedestal 45. v

A hopper36 is supported on the slide 31. The hopper is provided with theusual cont ainer 37into which blanksmay be inserted. A pairfofchutes 38communicate with the bottom of the hopper and guide the nuts to theslide 31. A guide plate 39 is located at an angle to the vertical andits lower edge is placed at a point slightly greater than thethicknessof a blankfrom the bottom of the hopper, particularly where thechute communicates with the container 37. This causes the blanks placedin juxtapositionto the guide plate 39 and located on the bottom of thecontainer to tip and work down to V a position such that they willlieflat on the bottom ofthe container. The back and forth movementsproduced by the lever 26 and particularly those induced by any sudden.releasement of 1eith er,of the compression springs 28 and 29, causesthe blanks to be shakenin the container 37 and to work into V the chutesand to nally work into the chutes, particularly at theend of the forwardmovements and at the beginning ofthe return movement by reason of theinertia of the blanks located at the upper ends of the chutes.

The blanks are delivered bythe chute in position to be tapped. They aredelivered in front of the tappingblock 40and between the tapping block40 and the cover plate.

41 having the holes 42, whereby the-block and plate may pass over thetaps 43. The location of the centers of holes 42 is at about thedistance of one and one-half times the width of a blank above the topofreleasing plate 44 which brings the second blank or nut from the loweredges of the plate and block in position to be tapped. The blanks arelocated in passageways that register with the ends of the chutes 38 andformed between the cover plate 41 and the hardened steel tapping block40, lVhen the slide is in its return position, the lower ends of thepassageways are closed by an adjustable re leasing plate 44 that isadjustably secured to a standard or pedestal 45 that may also be used tosupport in part the weight of the slide 31. When the slide is in itsforward position, the lower nut or blank is'dropped from the passagewayssince the slide is carried beyond the forward edge ofthe releas'-= fallfrom the releasing plate 011 to a'belt or conveyor. 46 andare carried toa hooded opening47 formed in the plate 2 throu h which they dropintoa'suitable receptac e,; such as the box 48. The belt 46 is driven bya belt49. that passes over the cam12 and pulley 50 supported on asuitable shaft that is rotatably supported in the braeket51 secured tothe plate 2 and operates to drive through gears, the pulleys 52, one ofwhich is supported by the bracket 51 and the other is supported by thebracket 53.

Thus the blanks are constantly vibrated or shaken so that they will beguided to the'chutes without jamming and'will be directed into thetapping position and pairs tiilereof delivered in succession from thema0 me.

The tapping blocks 40 are provided with large openings to preventcontact with the taps and to give free clearance, for the shavings (Fig.6).! They are backed by remov able soft steel inserts or blocks 7 5 thatgreatly extend the life of the machine. The taps 43 are secured inchucks 54 located on spindles 55. Thespindles 55 are rotated by 'meansof gear wheels 56 and the gear wheel 57'located in the gear box 58 thatis connected to theends of the guide bars 33. The ends of the guide bars33 may be provided with upturned flanges or plates 59 to form the sidesof the and then in the opposite direction to permit removal of the tapfrom the nuts. The first rotative motion is produced when the slide 31is moved forward, and the reverse gear box, or the gearbox 58 may bebolted to the guide bars 33, and unitary rotation of the gear mamas 5rotation is produced when-'the-slideL is returned. The rotativemovementslof the spindles aretherefore produced in synchronism with thesliding movements of the slide 31.

The shaft is a jointed shaft. to permit ready removal of the gear boxin. case of repairs, and is supported in suitable bearings located inthe gear case and in a bracket 62; A double frustumal-clutch member 63is keyed to the shaft 60 and is located between two clutch members thatmay be formed integral with the pulleys 64 and 65 thatare rotatedinopposite directions by the belts 13 and 66. When, therefore, the clutchmember 63 is moved so as to make contact with one of the. coactingpulley wheels 64 the shaft 60, and consequently the spindles55, will berotated in one direction, namely in aright-hand direction, when theslide 31 is being moved towards the gear casing, tl1at--is,"whilethe-tapsare threading'the nuts. To withdraw the taps from the nuts theclutch member 63 is moved so as to frictionallyengage the pulley 65,whereupon the shaft-60; will be rotated by the'operationf of "the. belt66 in the reverse direction, which will permit the removal of the tapsfrom the nuts. By thus connecting the shaft 60 through one or theotherof the pulleys 64 and 65 the speed of the shaft may also be varied, thatis, the speed of rotation during the tapping operation is preferablyslower than the speed of rotation during the withdrawal of the taps fromthe nuts.

En'dwise movement of the jointed shaft 60 is performed by. the,operation of the forked lever 67 (Fig. 7 which is connected to the shaft60 through the sleeve 68. The sleeve 68 is provided with a pair ofbosses or pins that protrude diametrically from the sleeve 68 that areengaged by the forked lever 67. The sleeve 68 may be provided with ballbearings for endwise and lateral thrust of the sleeve and the shaft.Thus the shaft. the gear box, and the taps are moved towards the rightas shown in Figures 1,2, 1 and 7 While the chute and tap blocks aremoved to the left.

The forked lever 67 is keyed to a shaft 69 that is supported in bearings70 located on the plate 2. A lever 71 is also keyed to the shaft 69 andis connected to a rod 72. The rod 72 is connected to the slotted lever19 by a pin extending through the slot 2 1. The point of connectionbetween the rod 72 and the lever 19 may thus be adjusted to obtain thedesired movements of the rod 72 relative to the rod 22 that is connectedat a point more remote from the axis of rotation of the arm 19. Thusmovements of the forked lever 67 relative to the slide 31 which isactuated by the rod 22 may be adjusted, whereby a relatively smallmovement is produced inthe clutch-63 and ajmore extensive movement isproduced in the slide 31. This adjustment :may be further refined bymeans of the block 73 through which the rod 72 extends, and which isadjustably; secured regulates the pressureon the clutch63 to permit the.clutch to be'released should the.

tapping mechanism be ammed in any way.

The rods 22 and 7 2 being; connected on the same side of the axis ofrotation of the arm 19, theclutch member 63-a1jidthe-slide31 thatcarries the blanks will thusbe moved to the left at the same time, butthe extent of their movements will vary according to the adjustments ofthe parts. l/Vhen the lever 19 is moved to the left the friction member63 frictionally connects with the pulley 64 which produces right-handrotation in the taps .and at the same time the slide 31 moves the blankstowards the taps and those that are-in tapping position along the tapswhile the threading operations are being performed. I When, therefore,the lever 19 is moved to the right the clutch member 63 is frictionallyconnected with the reverse pulley 65 which reverses the rotation of thetaps and at the same time the slide 31 is drawn away from the taps atsubstantially the same rate that thethreaded nuts vould be moved alongthe taps by the rotation of the taps. The lever 19 is caused to moveback and forth in its sequential operations by the cam 12 so that aslong as the jaw clutch 5 connects the cam 12 with the drive the tappingoperations are per formed.

The releasement during the withdrawal of the slide 31 produces .a quickmovement of the container which is accentuated by the springs located onrods, that causes the shaking of the blanks. This also may be furtherenhanced by a sudden change in, the path of the roller connected tothearm 19, that is, in the surface of the cam, such as at the points 79that actuate the roller 18 when the taps have completed theiroperationsand when the slide 31 has been completely withdrawn. In this waycertainty of blank feeding is obtained by the chutes and jamming of thenuts at the mouth of the chutes is avoided. The chutes 38 and he rod 72is connected to the block 73 i the container-37 are mounted on the slidewhich is connected to the pivoted arm 26,

and the arm 19 which is operated by the cam 12 is connected to the arm26 by the rod 22 and the springs 28 and 29. Thus the chute and thehopper are shaken upon the, completion "of the operations of the taps.

I claim: V 1. In a nut tapping machine, a clutch, a pair of rotativemembers, means for rotating the members in opposite directions, a

slide for receiving blanks, a tap, a member the members in oppositedirections, a slide for receiving blanks, a tap, a member connected tothe clutch and to the slide for moving the clutch and the slide in thesame direction and to connect one or the other of the rotativemembers tothe tap,a cam for operating the member.

3. In a nut tapping machine, a clutch, a. pair of rotative members,means for rotating the members in opposite directions, a slide forreceiving blanks, a tap, a member connected to the clutch and totheslide for moving the clutch and the slide in the same direction andto connect one or the other of the rotative members to the ta-p a camfor operating the member, a driving means, 1

a clutch for connecting the cam, With the driving means.

4:. In a nut tapping machine, a clutch, a

pair of rotative members, means for rotatmg the members in oppositedirectlons, a

slide for receivin blanks a air of ta' s a g a. P 1

pair of gear Wheels connected to the taps, a

gear Wheel connected to the clutch and meshing With the first-named gearwheels,

a resilient means interconnectingthe clutch and the slide forreciprocating the slide and a moving the clutch to 'conlnect one or theother of the rotative memberswith the lastnalned gear wheel on'thechange of directionof the movement of the slide.

In testimony whereof, I have hereunto signed my name to thisspecification.

CHARLES E. ROSS.

